I loaded a bunch of albums onto my iPhone and then realized some of them didn't have the album art, so I went through iTunes and added the art to the ones that were missing but it doesn't update the missing album art on my iPhone after syncing.

I loaded a bunch of albums onto my iPhone and then realized some of them didn't have the album art, so I went through iTunes and added the art to the ones that were missing but it doesn't update the missing album art on my iPhone after syncing.

How do I make the album art on my iPhone update?

This happened to me too. The only thing that worked for me was getting rid of the songs on the iPod first, then re-adding them. A pain, but it worked...

But yeah - there should be a way it detects that album art has been added/updated and automatically do this...

I kinda had this problem with album art appearing twice in the cover flow. I had to go back and make sure there was only one album cover for each song from that particular album. I had noticed that there might not be art for the first option but you can move the slider over and see the 2nd piece.

A good reliable free tagger for Mp3s is MP3tag.
I tried Fixtunes and using itunes to add artwork but Mp3tag is just so much better and quicker.
Also see this site for hard to find artwork:http://www.discogs.com/